I don't see how this will replace anyone doing field work, from what I understand the automix only affects the LR mix tracks, in many cases that is nothing more than a guide track to camera. I could maybe see this decreasing some work in the post audio world, as automixed location sound may be clean enough for the editors to do the final "mix" themselves in smaller productions.
The iso's are what matter at the end of the day, and those would be crap unless there is a trained professional or crew who knows what they are doing. Everything from, getting clean lav and boom tracks , signal flow and operation of the equipment, managing all the wireless of talent and camera feeds, IFBs, Timecode, battery management, boom operating, the list goes on...if that all is not done right, there are gonna be problems. Give a random PA a kit with this feature and the sound will be bad no matter how nicely it 'automixed'.